(**) PE = Population Equivalent. In Belgium, the first figure corresponds to the pollutant load that guarantees the European Norms (application of German rules of calculation); the second figure corresponds to the pollutant load that guarantees the Wallonia or Flanders norms (depending on the region).

This list is not compete and confidential. Clients can't be contacted before agreement and intervention of Zuko. It includes installations by Zuko and by subcontractors.

In every case, Zuko has modified the existing sewerage network in order to allow a rational functioning of the treatment system. Preliminary design for sewerage has always been done by Zuko.